2种粉碎粒度饼粕类饲料的瘤胃降解特性研究

发布时间：2018-06-18 14:26

本文选题：饼粕类饲料 + 粉碎粒度　；参考：《中国畜牧杂志》2017年12期

【摘要】：试验旨在探索茶籽粕等新型饲料作为反刍动物饲料的可能性,研究豆粕、油茶籽粕等6种饼粕类饲料的瘤胃降解特性及样品粉碎粒度对其瘤胃降解特性的影响。以3只安装永久性瘘管的小尾寒羊为试验动物,采用尼龙袋法测定2.5 mm和0.45 mm 2种粉碎粒度的豆粕、棉籽粕、菜籽粕、棕榈仁粕、茶籽粕和油茶籽粕的有机物(OM)和粗蛋白质(CP)瘤胃降解特性。结果表明:2.5 mm粉碎粒度下,豆粕OM和CP的有效降解率分别为51.98%和56.37%,显著高于其余5种原料(P0.05);油茶籽粕和茶籽粕CP的有效降解率仅次于豆粕(P0.05);棕榈仁粕的各营养成分瘤胃降解率均为最低;粒度为0.45 mm饼粕饲料的瘤胃有效降解率均高于粒度为2.5 mm饼粕饲料(P0.05);豆粕、棉籽粕和菜籽粕的能氮负平衡程度较大;棕榈仁粕、茶籽粕和油茶籽粕的能氮平衡负平衡程度小。从瘤胃降解特性来看,豆粕OM的瘤胃降解率最高,茶籽粕和油茶籽粕CP的瘤胃降解率较高,棕榈仁粕各营养成分瘤胃降解率较低,过瘤胃率较高,瘤胃降解氮利用率较高。
[Abstract]:The purpose of the experiment was to explore the possibility of using tea seed meal and other new feed as ruminant feed, to study the rumen degradation characteristics of soybean meal, camellia oil seed meal and other six kinds of meal feed, and to study the effect of sample granularity on rumen degradation characteristics. Three small tail Han sheep with permanent fistula were used for the determination of soybean meal, cottonseed meal, rapeseed meal and palm kernel meal with 2.5 mm and 0.45 mm granularity by nylon bag method. The rumen degradation characteristics of tea seed meal and camellia camelliae meal were investigated by organic matter (OM) and crude protein (CPP). The results show that under the particle size of 2.5 mm, The effective degradation rates of OM and CP in soybean meal were 51.98% and 56.37%, respectively, which were significantly higher than those of the other five raw materials (P 0.05), the effective degradation rate of CP in oilseed meal and tea seed meal was second only to that in soybean meal, and the rumen degradation rate of all nutrient components of palm seed meal was the lowest. The rumen effective degradation rate of 0.45 mm meal feed was higher than that of 2.5 mm cake feed P0.05, the energy nitrogen negative equilibrium degree of soybean meal, cottonseed meal and rapeseed meal was larger, and the negative equilibrium degree of energy and nitrogen balance of palm kernel meal, tea seed meal and oil tea seed meal was small. According to the characteristics of rumen degradation, the rumen degradation rate of soybean meal OM was the highest, the rumen degradation rate of tea seed meal and oil tea seed meal CP was higher, the rumen degradation rate of palm kernel meal was lower, the rumen rate was higher, and the nitrogen utilization rate of rumen degradation was higher.
【作者单位】：中国农业科学院饲料研究所农业部饲料生物技术重点实验室;甘肃农业大学动物科学技术学院;
【基金】：公益性行业(农业)科研专项经费(201303143)
【分类号】：S816

【相似文献】